Measurement of voltage fluctuation and flicker in electric power system based on wavelet transform

Large impact and disturbance of electric network will occur when the power equipment in a larger load runs. This paper introduces voltage fluctuation and flicker analysis by using better character of time-frequency localization based on the methods of synchronous square detection and multi resolutio...

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Bibliographic Details
Main Authors: Xin-Ling Wen, Yu Chen
Format: Conference Proceeding
Language:English
Subjects:
Demodulation
Electric variables measurement
Frequency measurement
Mallat arithmetic
multi-resolution analysis
Power measurement
Signal resolution
synchronous determination
Time frequency analysis
Voltage fluctuations
Voltage measurement
Wavelet analysis
Wavelet transform
Wavelet transforms
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Summary:Large impact and disturbance of electric network will occur when the power equipment in a larger load runs. This paper introduces voltage fluctuation and flicker analysis by using better character of time-frequency localization based on the methods of synchronous square detection and multi resolution wavelet transform. The amplitude and frequency of voltage fluctuation and flicker signal are measured through demodulation and decomposition. Abrupt-changing time and singularity degree of signals are also presented. The results of simulation experiment show that this method has better capability in measurement and time-frequency analysis, which can be applied to measure abrupt-changing, unstable voltage fluctuation and flicker signal.
ISSN:2158-5695
DOI:10.1109/ICWAPR.2007.4421750